Add CI for hlint

.github/workflows/ci.yaml

@@ -16,6 +16,10 @@ jobs:
   pre-commit:
     uses: ./.github/workflows/pre-commit.yaml
 
-  build-and-test:
+  hlint:
     needs: pre-commit
+    uses: ./.github/workflows/hlint.yaml
+
+  build-and-test:
+    needs: hlint
     uses: ./.github/workflows/build-and-test.yaml

.github/workflows/hlint.yaml

@@ -0,0 +1,19 @@
+on:
+  workflow_call:
+
+jobs:
+  hlint:
+    name: Hlint
+    runs-on: ubuntu-latest
+    steps:
+      - name: Clone project
+        uses: actions/checkout@v4
+
+      - name: Set up HLint
+        uses: haskell-actions/hlint-setup@v2
+
+      - name: Run HLint
+        uses: haskell/actions/hlint-run@v2
+        with:
+          path: .
+          fail-on: warning